计算:(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²
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![计算:(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²](/uploads/image/z/957880-64-0.jpg?t=%E8%AE%A1%E7%AE%97%EF%BC%9A%EF%BC%881%EF%BC%893%26%23178%3B%C3%97%EF%B9%99-2%EF%B9%9A%26%23178%3B+%EF%BC%884%EF%BC%89-1.1%26%23178%3B+%EF%BC%885%EF%BC%893.1%C3%9710%26%23178%3B%EF%BC%881%EF%BC%893%26%23178%3B%C3%97%EF%B9%99-2%EF%B9%9A%26%23178%3B+%EF%BC%884%EF%BC%89-1.1%26%23178%3B+%EF%BC%885%EF%BC%893.1%C3%9710%26%23178%3B)
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计算:(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²
计算:(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²
(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²
计算:(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²(1)3²×﹙-2﹚² (4)-1.1² (5)3.1×10²
1)3²×﹙-2﹚² =9*4=36 (3的平方等于9,2的平方等于4,乘积=9*4=36)
(4)-1.1² =-1.21 (1.1的平方等于1.21,再取负值)
(5)3.1×10²=3.1*100=310 (10的平方等于100,3.1*100=310)
刚才写的就是过程了,我后面加了分析
(1)3²×﹙-2﹚² =8×4=32
(4)-1.1²=-1.21
(5)3.1×10²=310
:(1)3²×﹙-2﹚² =9×4=36
(4)-1.1² =-1.21
(5)3.1×10²=310
(1)=9×4=36 (4)=-1.21 (5)=3.1×100=310
(1)3²×﹙-2﹚² =9×4=36
(4)-1.1² =-1.21
(5)3.1×10²=3.1×100=310